height, weight = eval(input("请输入身高（米）和体重（kg）[逗号隔开]："))
bmi = height / pow(weight, 2)
print("BMI数值是：{:.2f}".format(bmi))
who, dom = "", ""
if bmi < 18.5:       #  WHO标准
    who = "偏瘦"
elif bmi < 25:
    who = "正常"
elif bmi < 30:
    who = "偏胖"
else:
    who = "肥胖"
if bmi < 18.5:       #  我国卫生标准
    dom = "偏瘦"
elif bmi < 24:
    dom = "正常"
elif bmi < 28:
    dom = "偏胖"
else:
    dom = "肥胖"
print("BMI指标为：国际【{}】，国内【{}】。".format(who, dom))
